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AC-2(2) AC · Access Control

Automated Temporary and Emergency Account Management

LOW ✓ MODERATE ✓ HIGH
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Requirements NIST SOURCE

Automatically [one of: remove; disable] temporary and emergency accounts after [time period].

Discussion (NIST Supplemental Guidance)

Management of temporary and emergency accounts includes the removal or disabling of such accounts automatically after a predefined time period rather than at the convenience of the system administrator. Automatic removal or disabling of accounts provides a more consistent implementation.

Implementation Guidance

Engineering Interpretation

Original engineering commentary written for this explorer — not NIST source text and not authoritative guidance.

No engineering interpretation has been authored for AC-2(2) yet. This section is architected to receive it — see the Requirements and Assessment sections above for the authoritative NIST source content in the meantime.

Assessment

NIST SP 800-53A REV 5.2.0

Assessment Objectives

  1. one of the following PARAMETER VALUES is selected: {remove; disable};
  2. the time period after which to automatically remove or disable temporary or emergency accounts is defined;
  3. temporary and emergency accounts are automatically <AC-02(02)_ODP[01] SELECTED PARAMETER VALUE> after <AC-02(02)_ODP[02] time period>.

Examine

[SELECT FROM: Access control policy; procedures for addressing account management; system design documentation; system configuration settings and associated documentation; system-generated list of temporary accounts removed and/or disabled; system-generated list of emergency accounts removed and/or disabled; system audit records; system security plan; other relevant documents or records].

Interview

[SELECT FROM: Organizational personnel with account management responsibilities; system/network administrators; organizational personnel with information security with information security responsibilities; system developers].

Test

[SELECT FROM: Automated mechanisms for implementing account management functions].

Overlays

Showing the OT/ICS overlay for the parent control AC-2 — see the AC-2(2) entries within each baseline below.

OT/ICS Overlay SP 800-82r3

NIST SP 800-82r3 Appendix F, Table 22. Blank baseline means the control/control enhancement is not selected in that initial OT baseline.

LOW

  • Base control: Included (matches standard baseline)

MODERATE

  • Base control: Included (matches standard baseline)
  • Included: (1) (2) (3) (4) (5) (13)
  • Added: (11) (12)

HIGH

  • Base control: Included (matches standard baseline)
  • Included: (1) (2) (3) (4) (5) (13)
  • Excluded: (11) (12)

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for AC-2(2). This section is architected to display, per product: STIG ID, Finding ID, Severity, Title, Description, Check, Fix, CCI, and NIST control mapping — but nothing is populated here until a real DISA STIG/CCI dataset is ingested.

Learn more about STIG/CCI integration →

Evidence

Potential Evidence — Derived

Categorized from the SP 800-53A "Examine"/"Test" artifact list above by keyword — not an authoritative NIST evidence list.

Policy

  • Access control policy
  • system security plan

Configuration

  • system design documentation
  • system configuration settings and associated documentation

Testing

  • Automated mechanisms for implementing account management functions

Other Records

  • procedures for addressing account management
  • system-generated list of temporary accounts removed and/or disabled
  • system-generated list of emergency accounts removed and/or disabled
  • system audit records
  • other relevant documents or records